channel/get - Returns a single existing channel.id - The ID of the channel to get.{id: <number> - The ID of the channel.channel_name: <string> - The name of the channel.public: <boolean> - Whether the channel is marked as public.receive_notifications: <boolean> - Whether the channel owner receives notifications.insert_time: <number> - The Unix timestamp of when the channel was created.update_time: <number> - The Unix timestamp of when the channel was last modified.}CHANNEL_NOT_FOUND - A channel with the ID doesn't exist.